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Heat from the ground

Pipes for a ground-based heat-pump are installed in Kent. These devices work like refrigerators in reverse, extracting heat from the cold ground. Image: Kensa Engineering ltd

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Electricity from the Sun'); CellColorMouseOver(this);">1Hot water'); CellColorMouseOver(this);">2Small wind'); CellColorMouseOver(this);">3School days'); CellColorMouseOver(this);">4Heat from the ground'); CellColorMouseOver(this);">5
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